Greep Hooke was invited by his friend Jack Fruit to a treasure hunting expedition in the Far East. He was shown a 50 plus year old map with Japanese markings and writings. It came from a grand niece of a Japanese Army Colonel who executed Gen. Yamashita's orders to bury gold and other precious metals in different parts of Japanese occupied territory towards the end of World War II. Unfortunately, as decoys more bogus maps were prepared than genuine ones.
Greep examined the map. He noticed the colored FLAG (with a tiger mark) at the end of a multicolored ARC was in between a MOUNTAIN and a RIVER which had been properly identified. The writings below the FLAG had been translated into English. It read:

A SPROUT GOLFS GROWLED

Greep then remarked, "Yamashita was known as the Tiger of Malaya and much is told about the Yamashita Gold. But considering the odds, the treasure you seek is but a myth."

Question: What was the "treasure" in the map?

Answer

A POT OF GOLD (at the end of a rainbow)

Starting from A, get every other letter. (the ODD Letters - from the line "But considering the odds, the treasure you seek is but a myth."Hide